Jules Hudson is introduced to Big Red, a cow whose newborn calf needs urgent help to get off to the best possible start. There's a visit to a dairy farm where four generations have combined traditional values with cutting-edge technology. Here, cows choose when they want to be milked, guided by smart collars and advanced robotic systems. Rob and Dave Nicholson head to Scotland with a major decision to make, as they consider investing in a prized Highland heifer.